MIDI is the abbreviation of Musical Interface for Digital Instruments. MIDI allows
different instruments to be played through the organ and therefore provides the
facility for adding other MIDI compatible equipment i.e. keyboards, expanders or
disc drive units.
How does MIDI work? MIDI transmits/receives digital information only. I.e.
MIDI does not transmit/receive audio signals but the digital information tells the
connected device which key is selected and how long etc.
The MIDI standard has 16 different channels.
Your WESLEY organ transmits/receives through channel 1 (great), channel 2
(swell), channel 3 (pedal) and channel 12 (stops).
For example, it is possible to transmit MIDI data through channel 1 to an
expander and at the same time through channel 2 to another expander. In this
example, both expanders have to be installed in such a manner that each
expander only can receive data of its allocated channel.
FIXED COMBINATIONS
The pistons PP - P - MF - F - FF - T - 0 can be used in two modes. The pistons are
in the fIXed combination mode when piston Ml is out and in programmable
mode when piston Ml is pressed in.
Piston Ml is the right hand piston of the switch bank (placed below the
keyboard).
Fixed combinations are groups of factory preset registrations which have been
pre-selected according to traditional musical standards from PP (Double
Pianissimo) to T (Tutti).
It is also possible to switch individual voices on and off within the fIXed
combinations by simply pressing the appropriate stop (including accompaniment
stops and accessories).
Pressing the O-piston will switch off all stops.
The pistons are situated centrally below the keyboard.
PROGRAMMABLE COMBINATIONS
For switching from ftxed combinations mode to programmable combinations
mode, piston Ml has to be pressed. The free programmable pistons enables the
organist to store 7 personal choices of combinations of registrations into a
memory, and to recall or change them at any time.
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